This resolve directs the Department of Health and Human Services to amend the MaineCare rules governing reimbursement for outpatient behavioral health services provided in public schools under the MaineCare Benefits Manual, Chapters II and III, Section 65 and for services provided in residential treatment facilities for persons with mental illness and in specialized or scattered residential treatment facilities as described in the MaineCare Benefits Manual, Chapter III, Section 97, Appendices E and F, respectively. The department must initiate the rule-making process immediately after the resolve goes into effect, and the rules must remain in effect until the department completes a full rate determination. Finally, the resolve requires the department to form a stakeholder group to study how to develop more sustainable models of outpatient and residential mental and behavioral health treatment services and how to increase access to those services within the State. By January 1, 2025, the stakeholder group must submit a report to the department, and by January 15, 2025, the department must submit to the joint standing committee of the Legislature having jurisdiction over health coverage, insurance and financial services matters a summary of the report based on the stakeholder group's findings and recommendations, including suggested legislation. The joint standing committee is authorized to report out legislation.